Now that vehicles are largely controlled by a series of computers, there are new and exciting options for doing what used to be called a tune up. The fact is, the old mechanical means of tuning up a car, like the distributor and carburetor, have long since given way to electronic control by the engine control unit (ECU) and many other computer systems in a vehicle. The ability to get into the brain of those systems and manipulate a few specific settings is essential to maximizing power and performance, or increasing fuel economy.

A computer chip programmer is a small computer in itself that interfaces with the vehicle computer and replaces certain lines of code with custom commands. This allows the engine to move beyond the narrow factory-set performance parameters and deliver exactly what the driver wants--be it more power for towing or better fuel economy for commuting. When your car's auto part fails, the right plan is a new high performance OEM or replacement auto part to keep your car or truck in optimum shape. Once you got that car or truck, you had an investment that is likely to endure for many years, so support the choice by using the most reliable parts and accessories. Getting automotive parts from PartsGeek.com will leave you feeling like you know the secret to getting the best parts at the lowest prices.

Very satisfied with the Bully Dog. I am getting 3-4 mpg increase in mileage based my first trip out of town in the tow/economy mode. haven't tried towing anything heavy yet but looking forward to it. really like all the info that can be displayed at one time